Sai, Master Thopterist is the most flexible among legendary creatures with this play pattern, as there are plenty of strong artifact-centric strategies that synergize with its effects for building an army or drawing cards as the situation warrants
Satyr Wayfinder , Elvish Rejuvenator , Sylvan Scrying , and Hour of Promise all search out lands from your deck to either put into your hand or directly into play
The entire card shines with an embossed texture
Then, of course, theres Shiny Mew itself, one of the most iconic Shiny Pokemon net to Charizard and Umbreon, whose cute, cat-like features are exaggerated fully to make this card such a delight to witness
The answer is, as usual, a complex one
The need to have an unkillable creature relies on the rules of engagement